<template>
	<view>
		<view class="search-box">
			<uni-search-bar :radius="100" cancelButton="none" @input="input" ></uni-search-bar>
		</view>
		<view class="sugg-list" v-if="searchResults.length !== 0">
			<view class="sugg-item" v-for="(item,i) in searchResults" :key="i" @click="gotoDetail(item)">
				<view class="goods-name">{{item.goods_name}}</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>
		<view class="history-box"  v-if="historyList.length !== 0 && searchResults.length === 0" >
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="17" @click="cleanHistory"></uni-icons>
			</view>
			<view class="history-list">
				<uni-tag :text="item" v-for="(item,i) in histories" :key="i" @click="gotoGoodsList(item)"></uni-tag>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer:null,
				kw:'',
				searchResults: [],
				historyList: []
			};
		},
		onLoad() {
			this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
		},
		computed:{
			histories(){
		      return	[...this.historyList].reverse()
			}
		},
		methods:{
			input(e){
			clearTimeout(this.timer)
			this.timer = setTimeout(()=>{
				this.kw = e.value
				this.getSearchList()	
				},500)
			},
			async getSearchList(){
				if (this.kw.length === 0){
					this.searchResults=[]
					return
				}
				
				const {data:res} = await uni.$http.get('api/public/v1/goods/qsearch',{ query: this.kw })
				if (res.meta.status !== 200 ) return uni.$showMsg()
				this.searchResults = res.message
				this.saveSearchHistory()
			},
			gotoDetail(item){
				uni.navigateTo({
					url:'/subpkg/goods_detail/goods_detail?goods_id='+item.goods_id
				})
			},
			saveSearchHistory(){
				// this.historyList.push(this.kw)
				const set = new Set(this.historyList)
				
				set.delete(this.kw)
				set.add(this.kw)
				
				this.historyList = Array.from(set)
				
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
			},
			cleanHistory(){
				this.historyList=[]
				uni.setStorageSync('kw','[]')
			},
			gotoGoodsList(kw){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?query='+kw
				})
			}
		}
	}
</script>

<style lang="scss">
.search-box {
  position: sticky;
  top: 0;
  z-index: 999;
}
.sugg-list{
	padding: 0 5px;
	  .sugg-item{
		  display: flex;
		  align-items: center;
		  justify-content: space-between;
		  font-size: 12px;
		  padding: 13px 0;
		  border-bottom: 1px solid #efefef;
		  .goods-name{
			  white-space: nowrap;
			  overflow: hidden;
			  text-overflow: ellipsis;
		  }
	  }
  }
  .history-box{
	 padding: 0 5px;
	  .history-title{
		display: flex;
		justify-content: space-between;
		height: 40px;
		line-height: 40px;
		font-size: 13px;
		border-bottom: 1px solid #efefef;
	  }
	  .history-list{
		display: flex;
		flex-wrap: warp;
		.uni-tag{
			margin-top: 5px;
			margin-right: 5px;
		}
	  }
  }
</style>
